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CVE-2026-86133

🗓️ 29 Sep 2026 23:05:47Reported by WatchGuardType 
cve
 cve
🔗 web.nvd.nist.gov👁 11 Views

Remote DoS in WatchGuard Fireware OS iked via integer underflow in IKEv2 messages.

Related
Detection
Affected
Refs
CNA
Node
OR
watchguardfireware_osRange12.0–12.5.21
watchguardfireware_osRange2026.3–2026.3.2
watchguardfireware_osRange2025.0–2026.2.3
watchguardfireware_osRange12.0–12.12.3
[
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "2026.3",
        "versionType": "custom",
        "lessThan": "2026.3.2"
      },
      {
        "status": "affected",
        "version": "2025.0",
        "versionType": "custom",
        "lessThan": "2026.2.3"
      },
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.12.3"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "Default"
    ]
  },
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.5.21"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "T15/T35"
    ]
  }
]

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30 Sep 2026 16:40Current
6Medium risk
Vulners AI Score6
CVSS 48.2
EPSS0.0034
SSVC
11